Acoustic Model Training Software

• MS HCRF Acoustic Model Trainer - uses a non-commercial Open Source license
• Richard Myers and Jim Whitson's hmm trainer

HTK GUI front-ends

• ASR-Builder
• trefnydd- toolkit for building speech recognition engines.

Distributed computing resources

• Boinc distributed computing
  • Wiki
• gpu - Gnutella client that allows users to share CPU-resources